Parker 51 Parts - Pens for Salelivepages::jquery();?>
Parts for the Parker 51 (all variants).
Parker 51 MkI Vacumatic (1942-1948)
Parker 51 MkII Aerometric (1949-1969)
Parker 51 MkIII Aerometric (1969-1971) with Thin Clutch Ring and 61 style cap.
Parker 51 MkIII Aerometric (1971-1975) thick clutch Ring and 61 style cap.
The cap retaining screw changed from a Brass bush and Pearly grey 'jewel' to a domed metal screw in the MkIIII (1971-1975). Some of the later (61 style) caps are identified with the model number of the pen, some are not. Those that are not can also be used on the Parker 61 and the Parker 65 (1967-1975).